It is in the 4th tier of the Thai football league system.

Promoted to the 2018 Thai League 3 Upper Region Promoted from the 2017 Thailand Amateur League Northern Region Relegated to the 2018 Thailand Amateur League Northern Region Relegated from the 2017 Thai League 3 Upper Region In the third leg, the winner on head-to-head result of the first and the second leg will be home team.

If all of head-to-head still tie, must to find the home team from penalty kickoff on the end of each second leg match (This penalty kickoff don't bring to calculate points on league table, it's only the process to find the home team on third leg).

Updated to games played on 26 August 2018Source: Thai League 4 Source: Thai League 4 Archived 2018-06-12 at the Wayback Machine Note:Unk.1 Some error of T4 official match report 8 July 2018 (Uttaradit 4–1 Nakhon Mae Sot United).

[10] Unk.2 Some error of T4 official match report 15 July 2018 (Uttaradit 3–2 Nakhon Sawan).